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CVE-2021-24243— WPBakery Page Builder Clipboard < 4.5.6 - Subscriber+ Stored Cross-Site Scripting (XSS)

Quick assessment

Affected
bitorbit WPBakery Page Builder (Visual Composer) Clipboard
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress是WordPress（Wordpress）基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。 WordPress插件WPBakery Page Builder (Visual Composer) Clipboard 4.5.6之前版本存在跨站脚本漏洞，该漏洞允许低特权用户在所有后端页面中触发跨站脚本漏洞。

AI Predicted 6.1 Difficulty: Easy EPSS 0.70% · P51
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I. Basic Information for CVE-2021-24243

Vulnerability Information
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Vulnerability Title
WPBakery Page Builder Clipboard < 4.5.6 - Subscriber+ Stored Cross-Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
An AJAX action registered by the WPBakery Page Builder (Visual Composer) Clipboard WordPress plugin before 4.5.6 did not have capability checks nor sanitization, allowing low privilege users (subscriber+) to call it and set XSS payloads, which will be triggered in all backend pages.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress（Wordpress）基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。 WordPress插件WPBakery Page Builder (Visual Composer) Clipboard 4.5.6之前版本存在跨站脚本漏洞，该漏洞允许低特权用户在所有后端页面中触发跨站脚本漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
bitorbit WPBakery Page Builder (Visual Composer) Clipboard 4.5.0 ~ 4.5.0* -

II. Public POCs for CVE-2021-24243

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III. Intelligence Information for CVE-2021-24243

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Vendor Advisories for CVE-2021-24243 (1)

Other References for CVE-2021-24243 (1)

IV. Related Vulnerabilities

Same product: WPBakery Page Builder (Visual Composer) Clipboard
Same vendor: bitorbit
Same weakness: CWE-79

V. Comments for CVE-2021-24243

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